<template>
  <div class="login_container">
    <div class="login_box">
<!--头像区域-->
      <div class="avatar_box">
        <img src="../assets/xzq.jpg" alt="#"/>
      </div>
<!--登录表单区-->
      <el-form ref="LoginFormRef" :model="loginForm" :rules="loginRules" label-width="0px" class="login_form">
<!--用户名-->
        <el-form-item prop="username">
          <el-input  v-model="loginForm.username" prefix-icon="iconfont icon-users"></el-input>
        </el-form-item>
<!--密码-->
        <el-form-item prop="password">
          <el-input  v-model="loginForm.password" type="password" prefix-icon="iconfont icon-key_pairs"></el-input>
        </el-form-item>
<!--按钮-->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: 'Login',
  data () {
    return {
      loginForm: {
        username: '陈总',
        password: '1234'
      },
      loginRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 1, max: 5, message: '长度在 1 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 3, max: 6, message: '长度在 3 到 6 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetLoginForm () {
      this.$refs.LoginFormRef.resetFields()
    },
    login () {
      this.$refs.LoginFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('/login', {}, { params: this.loginForm })
        if (res.status !== 200) return this.$message.error('登录失败！')
        // console.log(res.token)
        this.$message.success('登录成功')
        // 1 将登录成功之后的token，保存在客户端的 sessionStorage 中
        // 1.1 项目中的除了登录之外的其他接口，必须登录后才能访问
        // 1.2 token 只应该在打开当前网站期间生效，所以保存在 sessionStorage
        // 2. 通过编程式导航跳转到后台主页，路由地址式 /home
        console.log(res)
        window.sessionStorage.setItem('token', res.data.token)
        await this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background: #fff;
  border-radius: 10px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    height: 130px;
    width: 130px;
    border: 0 solid ;
    border-radius: 50%;
    padding: 5px;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
